Emmy Rossum begs of you: Do not pop your pimples. The 31-year-old actress learned the hard way when she popped a pimple between her eyes and woke up with a story (and scab) that will haunt her forever.

The “Shameless” star revealed her pimple-popping horror story to Glamour, in which she warned fans to keep their hands far away from their faces, lest they want to wake up with a “third eye.” “Popping pimples. Don’t ever do it, it’ll just leave a scar. Do not do it,”Rossum said.

Rossum’s pimple-popping story began the night before she started shooting her 2004 film, “The Day After Tomorrow.” To make sure she was camera-ready for her big day, she decided to pop an annoying pimple between her eyebrows. She followed all the steps: She put a warm towel on the blemish, she used Q-tips instead of her fingers. But still, her efforts were no match for the scab-creating devils.

“I just remember the night before I started shooting ‘The Day After Tomorrow, ‘I had a huge pimple right between my eyebrows. I put a warm cloth on it, I did everything right,” Rossum said. “I used two little Q-tips to pop it, and then the next day I woke up and there was a huge scab between my eyes. It looked like I had a third eye!

Since then, Rossum has learned to leave her pimples alone and let them die down on their own. She warns fans against making her same mistake. “It probably would have been better if I had just left it alone,” Rossum said. “Such is the case. It’s very tempting, you’ve gotta sit on your hands and leave it alone.”